【自发电绷带可以加速伤口愈合】

【自发电绷带可以加速伤口愈合】近日,美国和中国的研究人员开发出了自发电绷带,它可以像普通敷料一样使用。绷带由缠绕在身体周围的纳米发电机发电,你需要做的就是呼吸 - 你的胸腔运动能够激活纳米发生器,向伤口区域发送低强度脉冲。虽然不完全清楚脉冲是如何起作用的,但科学家指出它们可以增加成纤维细胞(一种皮肤细胞)的活力,并促进它们排列,这是愈合的关键。脉冲还产生了有助于组织生长的其他生化材料。实验室测试结果表明电绷带效果显著,啮齿动物的伤口需要近两周才能以正常方式愈合,用电绷带只需要三天!该技术使用材料易得并且制作简单,因此它不比传统的包扎成本更高。现阶段的挑战只是让它实现,该团队仍然希望在猪皮肤上进行测试(类似于人体皮肤),之后进行人体实验。如果他们成功了,伤口愈合时间将会大大缩短。

 

Self-powered electric bandages could speed up healing

Wounds could take just a few days to heal instead of weeks.

Scientists have known for a long time that electricity can speed up healing for skin wounds, but the necessary power has usually tied patients to electrotherapy machines. In the future, though, it might not be much more complicated than treating a wound the old-fashioned way. Researchers in the US and China recently developed self-powered electric bandages that promise to be as easy to wear as ordinary dressings. The dressings include tiny electrodes powered by nanogenerators wrapped around your torso. All you have to do is breathe -- the movement of your ribcage activates the nanogenerators, sending low-intensity pulses to the wound area.

While it's not fully clear how the pulses help, scientists noted that they increase the viability of fibroblasts (a kind of skin cell) and encourage them to line up, which is key to the healing process. The pulses also produced additional biochemical materials that contribute to tissue growth.

The results were dramatic in lab tests. Wounds on rodents that took almost two weeks to heal the normal way only required three days with the electric bandage. The technology uses comparatively common materials and is simple to make, for that matter, so it shouldn't cost much more than conventional bandaging. The challenge at this stage is simply bringing it to fruition. The team still wants to test it on pig skin (similar to human skin), and human trials would have to follow after that. If they succeed, you could spend much less time recuperating, not to mention less time in the hospital.

https://www.engadget.com/2018/12/19/self-powered-electric-bandages-could-speed-up-healing/


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